The calcium chloride, potassium iodide, and sodium chloride are all ionic, while the citric acid, the phenyl salicylate, and the sucrose are all covalent. Using the Principle of Charge Neutrality (section 2.6.6) and knowing the charge of the ions allows you to determine the formula. All the remaining transition metals form multiple charged ions (iron for example, forms Fe+2 and Fe+3 and thus has multiple charge states). As indicated by the arrow, moving to the right, the following trends occur: Increasing oxidation state of the nonmetal, (Usage of this example can be seen from the set of compounds containing Cl and O). National Center for Biotechnology Information. But you have to remember that the bond between hydrogen and chlorine (for example) is covalent polar one. . Citric acid is an organic molecule composed of C, H, and O. answered by DrBob222 January 19, 2009 thanks. The "x" must be +3. [CDATA[*/{"annotations":null,"assetRoot":null,"branding":null,"clientUrl":"https://cdn.hypothes.is/hypothesis/1.38.0/build/boot.js","oauthEnabled":null,"onLayoutChange":null,"openLoginForm":null,"openSidebar":null,"query":null,"services":null,"showHighlights":"always","sidebarAppUrl":"https://hypothes.is/app.html","subFrameIdentifier":"017957525529105833","pluginClasses":{}}/*]]>*/, /**/, /* Ca2+ + CO32- --> CaCO3, 2.D; FeO --> Fe + O2- --> Iron must have a charge of +2 to make a neutral compound --> Fe2+ + O2- --> Iron(II) Oxide, 3.A; Al(NO3)3 --> Al3+ + (NO3-)3 --> Aluminum nitrate, 4.B; Phosphorus trichloride --> P + 3Cl --> PCl3, 5.D, LiClO4; Lithium perchlorate --> Li+ + ClO4- --> LiClO4, 6. a. Beryllium Oxalate; BeC2O4 --> Be2+ + C2O42- --> Beryllium Oxalate, b. How do you write diphosphorus trioxide? [CDATA[*/{"annotations":null,"assetRoot":null,"branding":null,"clientUrl":"https://cdn.hypothes.is/hypothesis/1.38.0/build/boot.js","oauthEnabled":null,"onLayoutChange":null,"openLoginForm":null,"openSidebar":null,"query":null,"services":null,"showHighlights":"always","sidebarAppUrl":"https://hypothes.is/app.html","subFrameIdentifier":"06664047888189506","pluginClasses":{}}/*]]>*/, /**/, /*
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